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An Method for Determining the Amplitude of the Forced Periodic Component of the Transient Short-Circuit Current

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Abstract

A method is proposed for the rapid and selective extraction of the amplitude of the forced periodic component of the transient short-circuit current in the presence of interference and sporadic saturation of current transformers. At a current measurement frequency of 4–5 kHz, the minimum time to determine the amplitude with an error of ±10−15% is 2–3 ms from the beginning of the short circuit provided a time to the first saturation of the current transformers is greater than 4–5 ms. The use of the technique is recommended in modern protection and control devices in which it is necessary to quickly and selectively determine the amplitude of the forced periodic component of an ultralarge transient short-circuit current.

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Correspondence to I. A. Ivanov.

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Translated by F. Baron

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Ivanov, I.A., Lyubarsky, D.R., Rubtsov, A.A. et al. An Method for Determining the Amplitude of the Forced Periodic Component of the Transient Short-Circuit Current. Russ. Electr. Engin. 92, 529–534 (2021). https://doi.org/10.3103/S106837122109008X

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  • DOI: https://doi.org/10.3103/S106837122109008X

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